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INSTALLING YOUR FURNACE
Secure hold-down plate to vent pipe using two (2) screws.
Using plumbers tape to secure vent to the plate spacer, nail
through one (1) hole in each end of plate spacer, into the wall
and ceiling plate.
INSTALL FURNACE VENT (RECESSED MOUNT)
Lower first lengths of oval, double wall vent pipe through the
plate spacers to the hold-down plate.
Push the vent pipe into the hold-down plate until it is
completely seated. (Hold-down cleat will engage the groove
in the vent pipe.)
Secure hold-down plate to vent pipe using two (2) screws.
COMPLETE THE VENTING
Refer to Figure 18.
Install oval to round adapter. Complete the piping
extending it through the roof. Use 4" round, double wall
(Type B) vent pipe, roof flashing, storm collar, and vent top
as shown. The vent cap must be at least 2 feet higher than
any point that is within 10 feet horizontally of the vent cap.
There must be at least 1 inch clearance between the vent
pipe and any combustible material.
IMPORTANT
Area above header within the stud space MUST be kept
clear of any attic insulation to allow the free circulation of
air around oval vent piping.
Mounting Your Furnace
To obtain adequate clearance for fastening furnace or to
install gas supply fittings, it may be necessary to remove
the burner and control assembly as follows:
Remove burner compartment door by pulling door top
out and up.
Locate the air discharge shield. It is secured across the
top of the burner control compartment. Remove two (2)
screws and shield and set aside. Refer to the illustration on
Page 29 #26 or 34 #19.
16
COUNTERFLOW TOP VENT GAS WALL HEATER
DISCONNECT WIRING
MODELS: CF35XX
Remove the screws holding the ignition control unit and
cover to the furnace casing.
Disconnect wires to free control module from its
mounting location. Mark or tag each wire removed
for its exact reconnection. Refer to Figure 19.
ALL OTHER MODELS
Disconnect two (2) 24 volt wires from the gas valve.
Disconnect two (2) wire connectors from junction block
midway on the thermocouple
REMOVE BURNER AND CONTROLS
MODELS: CF35XX
Locate the burner and screws that secure it. Remove the
two (2) screws (one from each end). Lift one end of the
burner at a time until free. Remove burner and controls
from the compartment.
Remove the screws holding the ignition control unit and
cover to the furnace casing.
FIGURE 19
IGNITION CONTROL
PART NUMBER P321910
ALL OTHER MODELS
Locate the burner and hex nuts that secure it. Remove
the two (2) hex nuts (one from each end). Flip up the wire
hinges. Lift one end of burner at a time until free. Remove
burner and controls from the compartment.
POSITION FURNACE (RECESSED MOUNT ONLY)
NOTE
If your furnace is surface mounted, your mounting was started
during VENT INSTALLATION, page 14. To complete furnace
mounting, go on to FASTEN FURNACE BOTTOM on this page.
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